NEW 2010 Circular Interconnects Catalog - All sections - 12-C3

Twinax Contacts for MIL-DTL-38999General Description, Application Data - Size 10 &12AmphenolAerospaceAmphenol ® Twinax Contacts -Were designed foruse with twinax cable in Data Bus systems. Twinax contactsprovide the following benefits:• Protection from magnetic interference• Protection from electrostatic interference including nuclearelec tromagnetic pulse• Meets parameters defined by MIL-STD-1553B• Maintains shield integrity through a multi-pin circularconnec tor and does not require contact polarization withinthe insertSIZE 10 & 12 CONCENTRIC TWINAXCONTACTSThe size 12 concentric twinax contact interface was developed forJN1104 EuroFighter contacts, and can be used in any size 12cavity M38999 I, II or III or SJT connector.Features:• Operating temperature –55°C to 175°C• Pins are scoop-proof• Meets performance levels of M38999 connector• 4 components, gold plated crimp termination• For use with a variety of cables (See chart below)TYPICAL ELECTRICAL PERFORMANCESize 10 & 12 Concentric Twinax ContactsVoltage Rating: 500 Vrms max. @ sea levelContact Resistance:Center @ 1 Amp, 55 millivolts max. voltage drop @ 25°CIntermediate @ 1 Amp, 55 millivolts max. voltage drop @ 25°COuter @ 12 Amps, 85 millivolts max. voltage drop @ 25°COperating Frequency: 0–30 MHzDielectric Withstanding Voltage:Center to Intermediate 800 VAC Rms @ Sea LevelIntermediate to Outer 500 VAC Rms @ Sea LevelJacket Braid InsulationCenterConductorCable Illustration - Twinax ContactConcentric Twinax Contacts Size 12Unassembled Components of Size12 Concentric Twinax Contact38999III II I SJT26482 83723 III 5015Matrix 2Matrix PyleCrimp RearRelease Matrix26500 PylePrintedCircuit BoardFor use withCableM17/176-00002,ST5M1212-0020024A0024, FilecaF2709-13-CAEPD32263A,10612,GSC-12-2548-00ASNE0849,5PTM1T04-1VG95218T023D002VG95218T023D002M17/176-00002,GSC-12-2549-000024A00245M2022-003SIZE 10 & 12 CONCENTRIC TWINAX CONTACTS FOR USE IN D38999 CONNECTORSConcentric Twinaxial ContactPart Number(Termination Instruction Sheet)**Pin21-33909-25(L-2092-G)21-33909-28(L-2092-G)21-33909-29(L-2092-H)21-33909-81(L-2092-AB)21-33909-91(L-2092-AC)21-33909-101(L-2092-AC)21-33844-1(L-1255-A)Socket21-33908-25(L-2092-G)21-33908-28(L-2092-G)21-33908-29(L-2092-H)21-33908-81(L-2092-AB)21-33908-91(L-2092-AC)21-33908-101(L-2092-AC)21-33640-25(L-2092-W)21-33640-28(L-2092-V)21-33843-1(L-1255-B)Contact Size12CommentsJN1104 InterfaceSame as -91 exceptnew ferrule with wiresupportConnectorSeriesD38999 Series I, III12 JN1104 Interface D38999 Series II10Supplied withThermal fit sleeveD38999 Series I, IIICONTACT ORDERING: Example number given in chart above 21-33909-25 should be ordered as 21-033909-025;example number 21-33843-1 should be ordered as 21-033843-001. Adding Zeros is necessary for Amphenol ordering process on allcontact numbers.**Termination instructions are packaged with each contact and can be found on-line at: www.amphenol-aerospace.com/serviceinstructions.aspEMI FilterTransientFiber OpticsHigh SpeedContactsOptionsOthersContact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com397